/*
 * Copyright 2012 Gregor Schauer
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package at.schauer.gregor.vienna.identifier;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.engine.spi.SessionImplementor;

import javax.annotation.Nonnull;
import java.io.Serializable;

/**
 * @author Gregor Schauer
 */
public class HibernateIdentifierGenerator implements IdentifierGenerator<Serializable, Object> {
	protected SessionFactory sessionFactory;
	protected org.hibernate.id.IdentifierGenerator delegate;

	public HibernateIdentifierGenerator(@Nonnull SessionFactory sessionFactory, @Nonnull org.hibernate.id.IdentifierGenerator delegate) {
		this.sessionFactory = sessionFactory;
		this.delegate = delegate;
	}

	@Nonnull
	@Override
	public Serializable generate(@Nonnull Object obj) {
		return delegate.generate(SessionImplementor.class.cast(getSession()), obj);
	}

	@Nonnull
	protected Session getSession() {
		return sessionFactory.getCurrentSession();
	}
}
